Stadium: Court 3 Round: 26 Ground: Clay
| ITF Austria F5 | 2018/07/31 08:00 | Jonathan Stenberg v Lah, Sven | 1-6,2-6 |
| ITF Austria F1 | 2018/07/01 07:30 | Lah, Sven v Aichhorn, Jakob | 6-3,6-4 |
| ITF Austria F1 | 2018/06/30 11:00 | Lah, Sven v Leuch, Vital Flurin | 6-1,6-0 |
| ITF Czech Republic F4 | 2018/06/27 11:55 | Torebko, Peter v Lah, Sven | 7-5,6-3 |
| ITF Czech Republic F4 | 2018/06/25 09:40 | Kalenichenko, Danylo v Lah, Sven | 4-6,4-6 |
| ITF Czech Republic F4 Qual | 2018/06/24 11:35 | Borsos, Gabor v Lah, Sven | 4-6,5-7 |
| ITF Czech Republic F4 Qual | 2018/06/23 08:00 | Roberto Rosales v Lah, Sven | 4-6,1-6 |
| ITF Czech Republic F4 Qual | 2018/06/23 08:00 | Adochitei Pandelea, Eric Tudor v Lah, Sven | 1-6,0-6 |
| ITF Austria F5 | 2018/07/31 10:20 | Neil Oberleitner v Jotovski, Tomislav | 4-6,4-6 |
| ITF Austria F4 | 2018/07/23 14:20 | Jotovski, Tomislav v Battaglino, Stefano | 4-6,4-6 |
| ITF Austria F3 | 2018/07/16 10:00 | Nerman Fatic v Jotovski, Tomislav | 7-6,6-2 |
| ITF Austria F2 | 2018/07/12 11:15 | Dischinger, Eduardo v Jotovski, Tomislav | 6-0,1-6,7-6 |
| ITF Austria F2 | 2018/07/11 09:00 | Fermin Tenti v Jotovski, Tomislav | 1-6,6-3,4-6 |
| ITF Austria F2 | 2018/07/10 10:30 | Schroll, Philipp v Jotovski, Tomislav | 6-7,1-6 |
| ITF Bosnia and Herzegovina F3 | 2018/06/01 11:00 | Kekez, Duje v Jotovski, Tomislav | 6-4,6-7,6-7 |
| ITF Bosnia and Herzegovina F3 | 2018/05/31 09:00 | Kranic, Karlo v Jotovski, Tomislav | 1-6,3-6 |